<!DOCTYPE html>
<html>
<head>
    <style>
        .fixed-position-element {
            background-color: green;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }
    </style>
</head>
<body>
    <div class="fixed-position-element"></div>
</body>
</html>
